diff options
Diffstat (limited to 'drivers/nfc/nq-nci.c')
| -rw-r--r-- | drivers/nfc/nq-nci.c | 104 |
1 files changed, 93 insertions, 11 deletions
diff --git a/drivers/nfc/nq-nci.c b/drivers/nfc/nq-nci.c index 154310020997..2dd18dd78677 100644 --- a/drivers/nfc/nq-nci.c +++ b/drivers/nfc/nq-nci.c @@ -53,6 +53,7 @@ struct nqx_dev { struct mutex read_mutex; struct i2c_client *client; struct miscdevice nqx_device; + union nqx_uinfo nqx_info; /* NFC GPIO variables */ unsigned int irq_gpio; unsigned int en_gpio; @@ -467,6 +468,25 @@ int nfc_ioctl_core_reset_ntf(struct file *filp) return nqx_dev->core_reset_ntf; } +/* + * Inside nfc_ioctl_nfcc_info + * + * @brief nfc_ioctl_nfcc_info + * + * Check the NQ Chipset and firmware version details + */ +unsigned int nfc_ioctl_nfcc_info(struct file *filp, unsigned long arg) +{ + unsigned int r = 0; + struct nqx_dev *nqx_dev = filp->private_data; + + r = nqx_dev->nqx_info.i; + dev_dbg(&nqx_dev->client->dev, + "nqx nfc : nfc_ioctl_nfcc_info r = %d\n", r); + + return r; +} + static long nfc_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg) { @@ -489,6 +509,9 @@ static long nfc_ioctl(struct file *pfile, unsigned int cmd, case NFCC_INITIAL_CORE_RESET_NTF: r = nfc_ioctl_core_reset_ntf(pfile); break; + case NFCC_GET_INFO: + r = nfc_ioctl_nfcc_info(pfile, arg); + break; default: r = -ENOIOCTLCMD; } @@ -508,13 +531,16 @@ static const struct file_operations nfc_dev_fops = { }; /* Check for availability of NQ_ NFC controller hardware */ -static int nfcc_hw_check(struct i2c_client *client, unsigned int enable_gpio) +static int nfcc_hw_check(struct i2c_client *client, struct nqx_dev *nqx_dev) { int ret = 0; unsigned char raw_nci_reset_cmd[] = {0x20, 0x00, 0x01, 0x00}; + unsigned char raw_nci_init_cmd[] = {0x20, 0x01, 0x00}; + unsigned char nci_init_rsp[28]; unsigned char nci_reset_rsp[6]; - + unsigned char init_rsp_len = 0; + unsigned int enable_gpio = nqx_dev->en_gpio; /* making sure that the NFCC starts in a clean state. */ gpio_set_value(enable_gpio, 0);/* ULPM: Disable */ /* hardware dependent delay */ @@ -536,16 +562,75 @@ static int nfcc_hw_check(struct i2c_client *client, unsigned int enable_gpio) /* Read Response of RESET command */ ret = i2c_master_recv(client, nci_reset_rsp, - sizeof(nci_reset_rsp)); + sizeof(nci_reset_rsp)); dev_err(&client->dev, - "%s: - nq - reset cmd answer : NfcNciRx %x %x %x\n", - __func__, nci_reset_rsp[0], - nci_reset_rsp[1], nci_reset_rsp[2]); + "%s: - nq - reset cmd answer : NfcNciRx %x %x %x\n", + __func__, nci_reset_rsp[0], + nci_reset_rsp[1], nci_reset_rsp[2]); + if (ret < 0) { + dev_err(&client->dev, + "%s: - i2c_master_recv Error\n", __func__); + goto err_nfcc_hw_check; + } + ret = i2c_master_send(client, raw_nci_init_cmd, + sizeof(raw_nci_init_cmd)); + if (ret < 0) { + dev_err(&client->dev, + "%s: - i2c_master_send Error\n", __func__); + goto err_nfcc_hw_check; + } + /* hardware dependent delay */ + msleep(30); + /* Read Response of INIT command */ + ret = i2c_master_recv(client, nci_init_rsp, + sizeof(nci_init_rsp)); if (ret < 0) { dev_err(&client->dev, "%s: - i2c_master_recv Error\n", __func__); goto err_nfcc_hw_check; } + init_rsp_len = 2 + nci_init_rsp[2]; /*payload + len*/ + if (init_rsp_len > PAYLOAD_HEADER_LENGTH) { + nqx_dev->nqx_info.info.chip_type = + nci_init_rsp[init_rsp_len - 3]; + nqx_dev->nqx_info.info.rom_version = + nci_init_rsp[init_rsp_len - 2]; + nqx_dev->nqx_info.info.fw_major = + nci_init_rsp[init_rsp_len - 1]; + nqx_dev->nqx_info.info.fw_minor = + nci_init_rsp[init_rsp_len]; + } + dev_dbg(&nqx_dev->client->dev, "NQ NFCC chip_type = %x\n", + nqx_dev->nqx_info.info.chip_type); + dev_dbg(&nqx_dev->client->dev, "NQ fw version = %x.%x.%x\n", + nqx_dev->nqx_info.info.rom_version, + nqx_dev->nqx_info.info.fw_major, + nqx_dev->nqx_info.info.fw_minor); + + switch (nqx_dev->nqx_info.info.chip_type) { + case NFCC_NQ_210: + dev_dbg(&client->dev, + "%s: ## NFCC == NQ210 ##\n", __func__); + break; + case NFCC_NQ_220: + dev_dbg(&client->dev, + "%s: ## NFCC == NQ220 ##\n", __func__); + break; + case NFCC_NQ_310: + dev_dbg(&client->dev, + "%s: ## NFCC == NQ310 ##\n", __func__); + break; + case NFCC_NQ_330: + dev_dbg(&client->dev, + "%s: ## NFCC == NQ330 ##\n", __func__); + break; + default: + dev_err(&client->dev, + "%s: - NFCC HW not Supported\n", __func__); + break; + } + + /*Disable NFC by default to save power on boot*/ gpio_set_value(enable_gpio, 0);/* ULPM: Disable */ ret = 0; goto done; @@ -566,9 +651,7 @@ done: static int nqx_clock_select(struct nqx_dev *nqx_dev) { int r = 0; - - nqx_dev->s_clk = - clk_get(&nqx_dev->client->dev, "ref_clk"); + nqx_dev->s_clk = clk_get(&nqx_dev->client->dev, "ref_clk"); if (nqx_dev->s_clk == NULL) goto err_clk; @@ -867,8 +950,7 @@ static int nqx_probe(struct i2c_client *client, * present before attempting further hardware initialisation. * */ - - r = nfcc_hw_check(client, platform_data->en_gpio); + r = nfcc_hw_check(client, nqx_dev); if (r) { /* make sure NFCC is not enabled */ gpio_set_value(platform_data->en_gpio, 0); |